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-rw-r--r--eater_cpu/cpp/CMakeLists.txt51
-rw-r--r--eater_cpu/cpp/Veater_computer__main.cpp83
-rw-r--r--eater_cpu/cpp/simpc_config.h4
-rw-r--r--eater_cpu/cpp/simpc_term.cpp96
-rw-r--r--eater_cpu/cpp/simpc_types.h1
-rw-r--r--eater_cpu/cpp/simpc_ui.h13
6 files changed, 248 insertions, 0 deletions
diff --git a/eater_cpu/cpp/CMakeLists.txt b/eater_cpu/cpp/CMakeLists.txt
new file mode 100644
index 0000000..771db9d
--- /dev/null
+++ b/eater_cpu/cpp/CMakeLists.txt
@@ -0,0 +1,51 @@
+cmake_minimum_required(VERSION 3.20)
+
+project(sim_eater_pc)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+find_package(verilator REQUIRED HINTS $ENV{VERILATOR_ROOT})
+
+find_package(Curses)
+find_package(FLTK)
+
+if(Curses_FOUND AND NOT TARGET Curses::Curses)
+ add_library(Curses::Curses INTERFACE IMPORTED)
+ set_target_properties(
+ Curses::Curses
+ PROPERTIES
+ INTERFACE_LINK_LIBRARIES "${CURSES_LIBRARIES}"
+ INTERFACE_INCLUDE_DIRECTORIES "${CURSES_INCLUDE_DIRS}"
+ )
+endif()
+
+if (Curses_FOUND)
+ option(USE_NCURSES "Whether to use ncurses as UI instead of flat terminal" TRUE)
+else()
+ message(STATUS "Curses library was not found.")
+endif()
+
+if (FLTK_FOUND)
+ option(USE_FLTK "Whether to build FLTK as UI" TRUE)
+else()
+ message(STATUS "FLTK library was not found.")
+endif()
+
+add_executable(Veater_computer Veater_computer__main.cpp )
+verilate(Veater_computer
+ SOURCES ../eater_computer.sv
+ TOP_MODULE eater_computer
+ TRACE_FST
+ INCLUDE_DIRS .. ../../nandgame ../../playground
+ VERILATOR_ARGS -CFLAGS -I${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+# if (USE_NCURSES)
+# target_compile_definitions(Veater_computer PRIVATE NCUR)
+# target_link_libraries(Veater_computer PRIVATE Curses::Curses)
+# target_sources(Veater_computer PUBLIC simpc_ui.cpp)
+# else()
+# target_sources(Veater_computer PUBLIC simpc_term.cpp)
+# endif()
+
+target_sources(Veater_computer PUBLIC simpc_term.cpp)
diff --git a/eater_cpu/cpp/Veater_computer__main.cpp b/eater_cpu/cpp/Veater_computer__main.cpp
new file mode 100644
index 0000000..df6b65e
--- /dev/null
+++ b/eater_cpu/cpp/Veater_computer__main.cpp
@@ -0,0 +1,83 @@
+// Verilated -*- C++ -*-
+// DESCRIPTION: Verilator output: main() simulation loop, created with --main
+
+#include "Veater_computer_eater_computer.h"
+#include "Veater_computer_my_mem__DB10.h"
+#include "verilated.h"
+#include "Veater_computer.h"
+#include "verilatedos.h"
+
+#include "verilated_fst_c.h"
+
+#include "simpc_ui.h"
+
+//======================
+
+int main(int argc, char** argv, char**) {
+ // Setup context, defaults, and parse command line
+ Verilated::debug(0);
+ const std::unique_ptr<VerilatedContext> contextp{new VerilatedContext};
+ contextp->traceEverOn(true);
+ contextp->threads(1);
+ contextp->commandArgs(argc, argv);
+
+ // Construct the Verilated model, from Vtop.h generated from Verilating
+ const std::unique_ptr<Veater_computer> topp{new Veater_computer{contextp.get(), ""}};
+
+ // waveforms!!!
+ VerilatedFstC* tfp = new VerilatedFstC;
+ topp->trace(tfp, 100);
+ tfp->open("eater.vvp");
+
+ topp->clk_in = 0;
+ topp->auto_run_in = 1;
+
+ // init RAM
+ // LDA 14
+ topp->eater_computer->RAM->r_datastore[0] = 0x0e;
+ // ADD 15
+ topp->eater_computer->RAM->r_datastore[1] = 0x1f;
+ // OUT
+ topp->eater_computer->RAM->r_datastore[2] = 0xe0;
+ // Data @ 14
+ topp->eater_computer->RAM->r_datastore[14] = 14;
+ // Data @ 15
+ topp->eater_computer->RAM->r_datastore[15] = 28;
+ simpc_ui_init();
+
+ // Simulate until $finish
+ while (VL_LIKELY(!contextp->gotFinish()) && VL_LIKELY(contextp->time() < 100)) {
+ // Evaluate model
+ topp->eval();
+
+ tfp->dump(contextp->time());
+ simpc_ui_write(topp, contextp->time());
+
+ // Advance time
+ contextp->timeInc(1);
+
+ topp->clk_in = !topp->clk_in;
+
+ if (topp->eater_computer->PC_out == 3 && topp->eater_computer->__PVT__decoder__DOT__internal_state == 0x01)
+ break;
+ }
+ contextp->timeInc(10);
+ tfp->dump(contextp->time());
+
+ tfp->close();
+ simpc_ui_finish_message(contextp, topp);
+
+ if (VL_LIKELY(!contextp->gotFinish())) {
+ VL_DEBUG_IF(VL_PRINTF("+ Exiting without $finish; no events left\n"););
+ }
+
+ // Execute 'final' processes
+ topp->final();
+
+ // Print statistical summary report
+ contextp->statsPrintSummary();
+
+ simpc_ui_cleanup();
+
+ return 0;
+}
diff --git a/eater_cpu/cpp/simpc_config.h b/eater_cpu/cpp/simpc_config.h
new file mode 100644
index 0000000..56c9ad8
--- /dev/null
+++ b/eater_cpu/cpp/simpc_config.h
@@ -0,0 +1,4 @@
+#pragma once
+
+// #define TICKS_PER_CLOCK_PERIOD 1
+// #define NCUR_DELAY_MS 10
diff --git a/eater_cpu/cpp/simpc_term.cpp b/eater_cpu/cpp/simpc_term.cpp
new file mode 100644
index 0000000..601a8cd
--- /dev/null
+++ b/eater_cpu/cpp/simpc_term.cpp
@@ -0,0 +1,96 @@
+#include "Veater_computer_eater_register.h"
+#include "simpc_ui.h"
+
+#include "disas.h"
+
+#define NCUR_X 5
+#define attroff(...)
+#define attron(...)
+#define PRINT_ME(y, x, ...) \
+ { \
+ printf("%*c", x, ' '); \
+ printf(__VA_ARGS__); \
+ printf("\n"); \
+ }
+#define PRINT_ME_W(w, y, x, ...) \
+ { \
+ printf("%*c", x, ' '); \
+ printf(__VA_ARGS__); \
+ printf("\n"); \
+ }
+#define PRINT_NEXT() \
+ { puts("-----"); }
+
+#include "Veater_computer.h"
+#include "Veater_computer_eater_computer.h"
+#include "Veater_computer_eater_alu.h"
+#include "verilated.h"
+#include <cstdint>
+#include <cstdio>
+#include <sched.h>
+
+bool paused = false;
+
+static void handle_key();
+
+void simpc_ui_write(const std::unique_ptr<Veater_computer> &topp, uint64_t i) {
+ // uint16_t opcode = topp->eater_computer->;
+ uint8_t opcode = topp->eater_computer->INS->r_datastore;
+ // topp->halt
+ uint8_t halt = 0;
+
+ PRINT_ME_W(status_top, 0, 0, "Step: %10lu", i);
+ PRINT_ME_W(status_top, 1, 0, "%-20s", paused ? "Paused" : "Running");
+
+ PRINT_ME(3, NCUR_X, "CLK1: %4d\tState: 0x%02X\tHLT: %d",
+ topp->clk_in,
+ topp->eater_computer->__PVT__decoder__DOT__internal_state,
+ halt);
+
+ PRINT_ME(4, NCUR_X, "BUS: %02X\tPC: @0x%02X\tINS: 0x%02X",
+ topp->eater_computer->bus,
+ topp->eater_computer->PC_out,
+ opcode
+ );
+
+ std::string insline{"???"}; //print_decoded(opcode, true);
+ PRINT_ME(5, NCUR_X, "%-80s", insline.c_str());
+
+ PRINT_ME(7, NCUR_X, "A: 0x%02X\tB: 0x%02X\tALU: 0x%02X\tOUT: 0x%02X",
+ topp->eater_computer->A->r_datastore, topp->eater_computer->B->r_datastore,
+ topp->eater_computer->alu->result, topp->eater_computer->OUT->r_datastore);
+ // PRINT_ME(
+ // 8, NCUR_X, "%c%8d\t%c%8d\t%c%8d\t%11d",
+ // topp->computer->store_to_A_int ? '*' : ' ', topp->computer->reg_A_int,
+ // topp->computer->store_to_D_int ? '*' : ' ', topp->computer->reg_D_int,
+ // topp->computer->store_to_pA_int ? '*' : ' ', topp->computer->reg_pA_int,
+ // topp->computer->result_int);
+
+ PRINT_NEXT();
+}
+
+void simpc_ui_finish_message(const std::unique_ptr<VerilatedContext> &contextp,
+ const std::unique_ptr<Veater_computer> &topp) {
+ attron(A_BOLD);
+ auto xpos = 20;
+ PRINT_ME_W(status_top, 0, xpos, "Simulation finished.");
+ const char *msg;
+ // topp->halt
+ bool halt = false;
+ if (halt) {
+ msg = "Halt encountered.";
+ } else if (!contextp->gotFinish()) {
+ msg = "Step count exceeded.";
+ } else {
+ msg = "Regular finish.";
+ }
+ PRINT_ME_W(status_top, 1, xpos, "%s", msg);
+
+ attroff(A_BOLD);
+}
+
+void simpc_ui_init(void) {}
+
+void simpc_ui_cleanup(void) {}
+
+void simpc_ui_confirm_finish(void) {}
diff --git a/eater_cpu/cpp/simpc_types.h b/eater_cpu/cpp/simpc_types.h
new file mode 100644
index 0000000..6f70f09
--- /dev/null
+++ b/eater_cpu/cpp/simpc_types.h
@@ -0,0 +1 @@
+#pragma once
diff --git a/eater_cpu/cpp/simpc_ui.h b/eater_cpu/cpp/simpc_ui.h
new file mode 100644
index 0000000..d840506
--- /dev/null
+++ b/eater_cpu/cpp/simpc_ui.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include "Veater_computer.h"
+#include "simpc_types.h"
+
+#include <memory>
+
+void simpc_ui_init(void);
+void simpc_ui_write(const std::unique_ptr<Veater_computer> &topp, uint64_t i);
+void simpc_ui_finish_message(const std::unique_ptr<VerilatedContext> &contextp,
+ const std::unique_ptr<Veater_computer> &topp);
+void simpc_ui_confirm_finish(void);
+void simpc_ui_cleanup(void);
generated by cgit v1.2.3 (git 2.39.1) at 2026-01-23 18:56:55 +0000